Movie: DodgeBall: A True Underdog Story (2004) 

The villain of the movie, White Goodman (Ben Stiller), has his sights on Kate (Taylor), but it looks like she'll probably end up with the protagonist, Peter LaFleur (Vince Vaughn). Lafleur is trying to save his gym from being bought by Goodman, and naturally the issue looks to be resolved in a dodgeball match. LaFleur and his ragtag bunch of dodgeballers have pluck and heart, so naturally they win, and in the moment of victory Kate gives LaFleur a smooch. But not before she turns to her previously unseen girlfriend, Joyce (Chorvat), and gives her a thorough tongue lashing. LaFleur is caught completely by surprised, but the audience loves it. Just look at the picture—even Fat Spectator with Goatee can't hide his glee.